Large-particle-size asphalt concrete construction process

Abstract

A large-particle-size asphalt concrete construction process comprises the following steps: A, preparing a pavement base layer before construction; B, mixing 75-80 parts by weight of concrete materials composed of aggregate, 30-35 parts by weight of auxiliary materials and 10-15 parts by weight of asphalt; C, paving the asphalt concrete on site; D, compacting the asphalt concrete to form a large-particle-size asphalt concrete layer; and E, curing the pavement. According to the construction process, the engineering construction speed is increased, the equipment investment is reduced, the traffic closing time can be greatly shortened in an overhaul and reconstruction project, and the social and economic benefits are remarkable. The large-particle-size asphalt concrete pavement paved after construction can resist large plasticity and shear deformation and bear heavy traffic, has good rut resistance, improves the high-temperature stability of the asphalt pavement, and shows very obvious permanent deformation resistance compared with the traditional asphalt concrete.

Description

technical field

[0001] The invention relates to the field of construction engineering, in particular to the field of road engineering construction, and in particular to a large particle size asphalt concrete construction process. Background technique

[0002] With the increase of traffic volume, the increase of heavy vehicles and tire pressure, and the channelization of traffic vehicles, the anti-rutting ability of asphalt pavement (anti-high temperature cumulative deformation) and the durability of the pavement deteriorate. How to improve the anti-rutting ability of asphalt pavement and prolong the service life of the pavement has become a very important issue in highway construction.

[0003] The types of mixtures commonly used in asphalt pavement in my country can be divided into three types of asphalt mixtures: fine-grained, medium-grained, and coarse-grained asphalt mixtures according to the particle size of the ore. In actual production, these types of mixtures are us...